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If the number of Xyz Materials of 1 Xyz Monster you control outnumbers the combined Xyz Materials of all Xyz Monsters your opponent controls: Your opponent can detach 1 Xyz Material from each of their Xyz Monsters, otherwise destroy all Xyz Monsters your opponent controls that did not detach an Xyz Material.

If the number of Xyz Materials of 1 [[ … If the number of Xyz Materials of 1 Xyz Monster you control outnumbers the combined Xyz Materials of all Xyz Monsters your opponent controls: Your opponent can detach 1 Xyz Material from each of their Xyz Monsters, otherwise destroy all Xyz Monsters your opponent controls that did not detach an Xyz Material.trols that did not detach an Xyz Material.